Flour mill with garlic separator



Sepw, 1941. C, MENEUx mL, 2,255,226

FLOUR MILL WITH GARLIC SEPARATOR i i 29 F'lled Aprll 8, 19:59

FIGA A Patented Sept. 9,-, 1941` FLOUR WITH GARLIC SEPARATOR Charles Meneux, Nantes, Sylvain Gabriel Bourdin, Angers, and Louis Chauss, Nantes, France Application April 8, 1939, Serial No. 266,754

In France April 16, 1938 3 Claims.

Several apparatus have already been proposed for separating garlic from cereal grains before said grains are milled into flour. Such apparatus generally'comprise a metallic roller associated with a rubber roller and tangentially bearing against it. The operation of such apparatus is far from being satisfactory because when nondecorticated garlic passes between the two rollers it' is only temporarily flattened and soon resumes its previous form when leaving the rollers due to the elasticity of its husk while when causing. husked garlic to pass between the said rollers, a l

substantial proportion of garlic sticks to the metallic roller and therefore remains in the cereal grains.

The present invention has for its primary object to provide an-improved method-and means whereby cereal vgrains such as wheat or rye grams can be eflicaciously freed of substantially the whole of their garlic content by simple and reliable means during the course of the milling operations that is to say between the rst and last grinding stages.

Another' object of the invention is to provide means readily incorporatable to a grain milling plant for automatically eliminating garlic or other impurities from a mass of cereal grains that has already been partly ground to the state of a coarse meal and before its nal conversion into our.

Still another object of the invention is to provide means whereby garlic or other impurities present in the meal are automatically picked out and led away to be separately collected while the meal being now freed of garlic continues its cyclic path to one or more other grinding stages.

A further object of the invention is to provide an apparatus adaptable to a corn milling plant and comprising a combination of means constructed and corelated in such a way that the meal constituents left in the separated garlic such as meal particles or bran can be recovered and led back to the milling cycle of the bulk of the meal now devoid of garlic.

A further object ofthe invention is to provide an apparatus for the purpose specified made up of a comparatively small number of rugged, durable and easily replaceable parts.

With ,these and such other objects and features in view as will incidentally appear hereafter, the invention comprises the novel combination of steps and the novel construction and arrangement of parts that will now be described with rference to the accompanying diagrammatic drawing exemplifying an embodiment of the same and forming a part of the present disclosure. f

In the drawing: Figure 1 is a diagrammatic view showing several devices comprised in the apparatus for carrying out the'process according to the invention. Figure 2 is an elevational view of one of a pair of co-operating garlic-removing cylindrical rollers showing, partly, the grooves and flutes on it peripheral surface.

Figure 3 is a sectional view on a much larger scale' showing a few of the spaced grooves onlthe roller taken on line 3-3 of Fig. 2.

Figure 4 is a sectional view on the same scale as Fig. 3 showing a few of the contiguousutes on the said roller, taken on line 4 4 of Fig. 2.

.As illustrated in Fig. 1,l the mass of hulled or decorticated and partly ground cereal grains (for example wheat or corn grains) mixed with a certain proportion'of garlic (which varies with the nature and origin of the crop) is fed in meal form from y preliminary grinding means i. e. grinding rollers 28-29 in the direction depicted by the line lI to a revoluble roll 2 which co-operates with aY slightly spaced companion roll 3 r0- tating in the same direction to form a distributor mounted over a trough 4 adjacentthe frame wall 5. 'I'he purpose of such distributor is to form the mass of grains mixed with garlic into a sheet and to feed such sheet by gravity {as shown by the line 6) between the rigid cylindrical rollers 1, 8 which rotate in opposite directionsunder the action of any suitable drive (not shown) preferably at slightly different angular speeds and are in substantially tangential relation.

The purpose of the co-operating rollers 1, 9 is to remove or pick up the garlic seeds scattered amidst .the meal of cereal grains fromsaid meal. This result. is obtained in the embodiment illustrated by providing the roller 8 with grooves 9 and utes or flutings I0 shaped, arranged and extending as shown by Figs. 2, 3 and 4.` Thel grooves 9 extend at right angles to the generatrix` :v -a: of the roller 8; they are separated byplain surfaces I I. The flutes l0 vrun slightly obliquely to the generatrix arr-a:l and are arranged in contiguous-relationship. The grooves 9 and utes I 0 intersect one another to form angles having about and 105. Such angularities are not limitative.

The peripheral surface of the grooved and uted roller 8 is rubbed by a revoluble brush vI2 mounted on an axis extending parallel to the axis of the roller 8. The brush I2 is actuated size and `it may be arranged to rub either the.

roller' 8 or the roller 1. Its bristles are constiuted advantageously by goose feathers and/or y/ piassaba bres. The-purpose of the brush I2 is to strip on. or eject the garlic seeds from the grooves S'and flutes I0 by which they are picked up on the roller 8. Such result is obtained with more certainty owing to the fact thatliber-{reliminary decorticating action to which thei'grai'n mixture is,subjected hulls the garlic seeds and uncovers their pulp which is a little tacky, whereby it can be seized more "easily by the bristles of the brush I2. The purpose of the stationary brush I3 is both to slacken the speed of thebrush I2 and to strip its bristles.

The garlic seeds that are ejected from the 'roller 8 by the action of the brush I2 fall as shown by the line I4 while carrying with them a small proportion of 'bran and meal. Simultaneously, the cereal grains freed from the garlic seeds leave the co-operating rollers I and 8 and fall-by gravity along the path depicted by the line I5. The paths I4 and I5 followed by the respective substances are separated by a baille or partition I6 to prevent them from intermingling again.

The path I4 leads at I'I to the hopper I8 of a separating device I9 the purpose of which is to sort the garlic seeds from the bran and meal carried thereby. Such separating device may be of any knowntype and may comprise for example a paratus are applicable to all kinds of cereals and i to all sorts of impurities similar to garlic.

What we claim is:

1. In a milling plant comprising means for hulling and grinding a mass of cereal grains mixed with garlic to produce a coarse meal, means for distributing said meal into sheet form, a pair of cooperating rigid surfaced rollers rotating in op posite directions at slightly different speeds and so located as to receive between them on one side the sheet of meal, one of said rollers having' peripheral inter-crossed grooves, a revoluble brush in rubbing contact with the grooved roller, a stationary brush engaging said revolublebrush at a position remote from the point where it rubs the roller, the degree of engagement of both brushes being sufcient 'to cause the revoluble brush to rotate at an angular speed much slower than that of the grooved roller, and means forseparately collecting the garlic ejected oil said brushes and the meal free of garlic from the outlet si'deof said rollers.

-2. In a milling plant comprising means for hulling and grinding a mass of-,cereal grains mixed with garlic to produce a coarse meal..

extending in one direction being separated by flats while the grooves extending in the other direction are separated by sharp edges, movable friction means in contact with the grooved roller,

I stationary friction means rubbing said movable friction means at a point remote from its engage- `Iplane sieve as used for separating groats from semolina or other meal components, and a fan adapted't'o remove the several portions of bran.- The garlic seeds are discharged at 20 while the bran is collected at 2I and themeal is collected at 22. Y The path I5 leads to a grinding device which may be made up of a pair of tangential cylinders 23, 24 capable of further grindingthe meal to a nner flour. One or more pairs of such grinding cylinders may be provided to operate either in series orin parallel. The flour leaving the grinding device follows the'path depicted by the line 25 and meets the substances which come from the separating device I3 as shown at 26. The mixed substances then reach at 21 the bolting stage (not shown) which may be performed vin any known way.

As will be seen, the garlic seeds are removed vfrom the cereal grains during the course of the milling operations that is to say intermediate several grinding stages, so that the present process and apparatus can be suitably incorporated to a milling plant.

- It will be understood that the process and aproller, stationary friction means rubbing said ment'with said roller, and means for separately collecting the garlic ejected off said friction elements and the meal free of garlic from the outlet .side of said rollers.

3. In a milling plant comprising Vmeans for hulling and grinding a mass of cereal grains mixed with garlic to produce a coarse meal, means for distributing said meal in sheet form by gravity, a pair of cooperating cylindrical rollers having rigid surfaces and rotating in opposite directions, said rollers having their inlet crotch so located as to receive the sheet of meal, one of said rollers having peripheral grooves exrated by flats and other peripheral grooves extending at an angle to the first-named grooves movable friction means at a position remote from its point of engagement with said grooved roller,v and means for separately collecting and leadin away the garlic ejected olf said friction elements CHARLES MENEUX. sYLvAnI GABRIEL BOURDIN. LoUIs cHAUss.

Itending at right angles to its generatrix and sepa- 

